关于兰科盆距兰属与囊唇兰属的混淆问题(英文)

Notes on Two Confused Genera: Gastrochilus and Saccolabium (Orchidaceae)

回顾盆距兰属(Gastrochilus)与囊唇兰属(Saccolabium)两个混淆属的简史。它们为彼此明显不同的独立属。盆距兰属的唇瓣为半球形囊状,侧裂片不明显,中裂片甚大;蕊柱无足;花粉团具孔隙。囊唇兰属的唇瓣为圆筒状距形,侧裂片明显,中裂片很小;蕊柱有短足;花粉团实心。前者广泛分布于亚洲热带与亚热带地区;后者则只局限于印度尼西亚的爪哇与苏门答腊。因此,建议在国际命名法规中取消保留名Saccolabium以及作为其异名的废弃名Gastrochilus(1822号)。

Taxonomic history of two confused genera, Gastrochilus and Saccolabium, is briefly reviewed. It is concluded that they are distinct from each other. In Gastrochilus the lip is semiglobuse-saccate with indistinct side-lobes and a much larger mid-lobe, the column is footless and the pollinia are porate, while in Saccolabium the lip is cylindrical-spurred with indistinct side-lobes and a small mid-lobe, the column has a short foot and the pollinia are solid, The former is widely distributed in tropical and subtropical Asia and the latter is restricted to Java and Sumatra of Indonesia. As a result, a proposal is made to modify the conserved name Saccolabium and to exclude the previously listed synonym or rejected name Gastrochilus in the International Code of Botanical Nomenclature （No. 1822. ）.